Well there you go, good point.
I didn't really like it being an operator myself. But I can see having a
math.tolerance class being useful.

On Tue, 23 Jun 2020 at 13:53, Jonathan Goble <jcgob...@gmail.com> wrote:

> On Tue, Jun 23, 2020 at 8:44 AM Mathew Elman <mathew.el...@ocado.com>
> wrote:
>
>> Perhaps a more versatile operator would be to introduce a +- operator
>> that would return an object with an __eq__ method that checks for equality
>> in the tolerance i.e
>>
>>     a == b +- 0.5
>>
>
> This is already valid syntax, because unary minus is a thing. So this is
> currently parsed as "a == b + (-0.5)".
>
> Reversing it to use -+ won't work because unary plus is also a thing.
>

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